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107 lines
3.6 KiB
Plaintext
107 lines
3.6 KiB
Plaintext
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla FastLoad code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 2001
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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/*
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* nsISeekableStream
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*
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* Note that a stream might not implement all methods (e.g., a readonly stream
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* won't implement setEOF)
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*/
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#include "nsISupports.idl"
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[scriptable, uuid(8429d350-1040-4661-8b71-f2a6ba455980)]
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interface nsISeekableStream : nsISupports
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{
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/*
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* Sets the stream pointer to the value of the 'offset' parameter
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*/
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const PRInt32 NS_SEEK_SET = 0;
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/*
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* Sets the stream pointer to its current location plus the value
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* of the offset parameter.
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*/
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const PRInt32 NS_SEEK_CUR = 1;
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/*
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* Sets the stream pointer to the size of the stream plus the value
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* of the offset parameter.
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*/
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const PRInt32 NS_SEEK_END = 2;
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/**
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* seek
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*
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* This method moves the stream offset of the steam implementing this
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* interface.
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*
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* @param whence specifies how to interpret the 'offset' parameter in
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* setting the stream offset associated with the implementing
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* stream.
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*
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* @param offset specifies a value, in bytes, that is used in conjunction
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* with the 'whence' parameter to set the stream offset of the
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* implementing stream. A negative value causes seeking in
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* the reverse direction.
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*
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* @throws NS_BASE_STREAM_CLOSED if called on a closed stream.
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*/
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void seek(in long whence, in long long offset);
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/**
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* tell
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*
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* This method reports the current offset, in bytes, from the start of the
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* stream.
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*
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* @throws NS_BASE_STREAM_CLOSED if called on a closed stream.
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*/
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long long tell();
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/**
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* setEOF
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*
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* This method truncates the stream at the current offset.
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*
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* @throws NS_BASE_STREAM_CLOSED if called on a closed stream.
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*/
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void setEOF();
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};
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